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sysfs: Use the presence of /sys/block/<dev>/md as indicator of valid device
[thirdparty/mdadm.git] / Detail.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Author: Neil Brown
22 * Email: <neilb@suse.de>
23 */
24
25 #include "mdadm.h"
26 #include "md_p.h"
27 #include "md_u.h"
28 #include <dirent.h>
29
30 static int cmpstringp(const void *p1, const void *p2)
31 {
32 return strcmp(* (char * const *) p1, * (char * const *) p2);
33 }
34
35 static int add_device(const char *dev, char ***p_devices,
36 int *p_max_devices, int n_devices)
37 {
38 if (n_devices + 1 >= *p_max_devices) {
39 *p_max_devices += 16;
40 *p_devices = xrealloc(*p_devices, *p_max_devices *
41 sizeof(**p_devices));
42 if (!*p_devices) {
43 *p_max_devices = 0;
44 return 0;
45 }
46 };
47 (*p_devices)[n_devices] = xstrdup(dev);
48 return n_devices + 1;
49 }
50
51 int Detail(char *dev, struct context *c)
52 {
53 /*
54 * Print out details for an md array
55 */
56 int fd = open(dev, O_RDONLY);
57 int vers;
58 mdu_array_info_t array;
59 mdu_disk_info_t *disks;
60 int next;
61 int d;
62 time_t atime;
63 char *str;
64 char **devices = NULL;
65 int max_devices = 0, n_devices = 0;
66 int spares = 0;
67 struct stat stb;
68 int is_26 = get_linux_version() >= 2006000;
69 int is_rebuilding = 0;
70 int failed = 0;
71 struct supertype *st;
72 char *subarray = NULL;
73 int max_disks = MD_SB_DISKS; /* just a default */
74 struct mdinfo *info = NULL;
75 struct mdinfo *sra;
76 struct mdinfo *subdev;
77 char *member = NULL;
78 char *container = NULL;
79
80 int rv = c->test ? 4 : 1;
81 int avail_disks = 0;
82 char *avail = NULL;
83 int external;
84 int inactive;
85
86 if (fd < 0) {
87 pr_err("cannot open %s: %s\n",
88 dev, strerror(errno));
89 return rv;
90 }
91 vers = md_get_version(fd);
92 if (vers < 0) {
93 pr_err("%s does not appear to be an md device\n",
94 dev);
95 close(fd);
96 return rv;
97 }
98 if (vers < 9000) {
99 pr_err("cannot get detail for md device %s: driver version too old.\n",
100 dev);
101 close(fd);
102 return rv;
103 }
104 sra = sysfs_read(fd, NULL, GET_VERSION|GET_DEVS);
105 external = (sra != NULL && sra->array.major_version == -1
106 && sra->array.minor_version == -2);
107 st = super_by_fd(fd, &subarray);
108 if (md_get_array_info(fd, &array) == 0) {
109 inactive = 0;
110 } else if (errno == ENODEV && sra) {
111 if (sra->array.major_version == -1 &&
112 sra->array.minor_version == -1 &&
113 sra->devs == NULL) {
114 pr_err("Array associated with md device %s does not exist.\n", dev);
115 close(fd);
116 sysfs_free(sra);
117 return rv;
118 }
119 array = sra->array;
120 inactive = 1;
121 } else {
122 pr_err("cannot get array detail for %s: %s\n",
123 dev, strerror(errno));
124 close(fd);
125 return rv;
126 }
127
128 if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
129 stb.st_rdev = 0;
130 rv = 0;
131
132 if (st)
133 max_disks = st->max_devs;
134
135 if (subarray) {
136 /* This is a subarray of some container.
137 * We want the name of the container, and the member
138 */
139 dev_t devid = devnm2devid(st->container_devnm);
140 int cfd, err;
141
142 member = subarray;
143 container = map_dev_preferred(major(devid), minor(devid),
144 1, c->prefer);
145 cfd = open_dev(st->container_devnm);
146 if (cfd >= 0) {
147 err = st->ss->load_container(st, cfd, NULL);
148 close(cfd);
149 if (err == 0)
150 info = st->ss->container_content(st, subarray);
151 }
152 }
153
154 /* try to load a superblock. Try sra->devs first, then try ioctl */
155 if (st && !info) for (d = 0, subdev = sra ? sra->devs : NULL;
156 d < max_disks || subdev;
157 subdev ? (void)(subdev = subdev->next) : (void)(d++)){
158 mdu_disk_info_t disk;
159 char *dv;
160 int fd2;
161 int err;
162 if (subdev)
163 disk = subdev->disk;
164 else {
165 disk.number = d;
166 if (md_get_disk_info(fd, &disk) < 0)
167 continue;
168 if (d >= array.raid_disks &&
169 disk.major == 0 &&
170 disk.minor == 0)
171 continue;
172 }
173
174 if (array.raid_disks > 0 &&
175 (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
176 continue;
177
178 dv = map_dev(disk.major, disk.minor, 1);
179 if (!dv)
180 continue;
181
182 fd2 = dev_open(dv, O_RDONLY);
183 if (fd2 < 0)
184 continue;
185
186 if (st->sb)
187 st->ss->free_super(st);
188
189 err = st->ss->load_super(st, fd2, NULL);
190 close(fd2);
191 if (err)
192 continue;
193 if (info)
194 free(info);
195 if (subarray)
196 info = st->ss->container_content(st, subarray);
197 else {
198 info = xmalloc(sizeof(*info));
199 st->ss->getinfo_super(st, info, NULL);
200 }
201 if (!info)
202 continue;
203
204 if (array.raid_disks != 0 && /* container */
205 (info->array.ctime != array.ctime ||
206 info->array.level != array.level)) {
207 st->ss->free_super(st);
208 continue;
209 }
210 /* some formats (imsm) have free-floating-spares
211 * with a uuid of uuid_zero, they don't
212 * have very good info about the rest of the
213 * container, so keep searching when
214 * encountering such a device. Otherwise, stop
215 * after the first successful call to
216 * ->load_super.
217 */
218 if (memcmp(uuid_zero,
219 info->uuid,
220 sizeof(uuid_zero)) == 0) {
221 st->ss->free_super(st);
222 continue;
223 }
224 break;
225 }
226
227 /* Ok, we have some info to print... */
228 str = map_num(pers, array.level);
229
230 if (c->export) {
231 if (array.raid_disks) {
232 if (str)
233 printf("MD_LEVEL=%s\n", str);
234 printf("MD_DEVICES=%d\n", array.raid_disks);
235 } else {
236 if (!inactive)
237 printf("MD_LEVEL=container\n");
238 printf("MD_DEVICES=%d\n", array.nr_disks);
239 }
240 if (container) {
241 printf("MD_CONTAINER=%s\n", container);
242 printf("MD_MEMBER=%s\n", member);
243 } else {
244 if (sra && sra->array.major_version < 0)
245 printf("MD_METADATA=%s\n", sra->text_version);
246 else
247 printf("MD_METADATA=%d.%d\n",
248 array.major_version, array.minor_version);
249 }
250
251 if (st && st->sb && info) {
252 char nbuf[64];
253 struct map_ent *mp, *map = NULL;
254
255 fname_from_uuid(st, info, nbuf, ':');
256 printf("MD_UUID=%s\n", nbuf+5);
257 mp = map_by_uuid(&map, info->uuid);
258 if (mp && mp->path &&
259 strncmp(mp->path, "/dev/md/", 8) == 0) {
260 printf("MD_DEVNAME=");
261 print_escape(mp->path+8);
262 putchar('\n');
263 }
264
265 if (st->ss->export_detail_super)
266 st->ss->export_detail_super(st);
267 } else {
268 struct map_ent *mp, *map = NULL;
269 char nbuf[64];
270 mp = map_by_devnm(&map, fd2devnm(fd));
271 if (mp) {
272 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
273 printf("MD_UUID=%s\n", nbuf+5);
274 }
275 if (mp && mp->path &&
276 strncmp(mp->path, "/dev/md/", 8) == 0) {
277 printf("MD_DEVNAME=");
278 print_escape(mp->path+8);
279 putchar('\n');
280 }
281 }
282 if (sra) {
283 struct mdinfo *mdi;
284 for (mdi = sra->devs; mdi; mdi = mdi->next) {
285 char *path =
286 map_dev(mdi->disk.major,
287 mdi->disk.minor, 0);
288
289 if (mdi->disk.raid_disk >= 0)
290 printf("MD_DEVICE_%s_ROLE=%d\n",
291 mdi->sys_name+4,
292 mdi->disk.raid_disk);
293 else
294 printf("MD_DEVICE_%s_ROLE=spare\n",
295 mdi->sys_name+4);
296 if (path)
297 printf("MD_DEVICE_%s_DEV=%s\n",
298 mdi->sys_name+4, path);
299 }
300 }
301 goto out;
302 }
303
304 disks = xmalloc(max_disks * 2 * sizeof(mdu_disk_info_t));
305 for (d = 0; d < max_disks * 2; d++) {
306 disks[d].state = (1<<MD_DISK_REMOVED);
307 disks[d].major = disks[d].minor = 0;
308 disks[d].number = -1;
309 disks[d].raid_disk = d/2;
310 }
311
312 next = array.raid_disks*2;
313 if (inactive) {
314 struct mdinfo *mdi;
315 if (sra != NULL)
316 for (mdi = sra->devs; mdi; mdi = mdi->next) {
317 disks[next++] = mdi->disk;
318 disks[next-1].number = -1;
319 }
320 } else for (d = 0; d < max_disks; d++) {
321 mdu_disk_info_t disk;
322 disk.number = d;
323 if (md_get_disk_info(fd, &disk) < 0) {
324 if (d < array.raid_disks)
325 pr_err("cannot get device detail for device %d: %s\n",
326 d, strerror(errno));
327 continue;
328 }
329 if (disk.major == 0 && disk.minor == 0)
330 continue;
331 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
332 && disks[disk.raid_disk*2].state == (1<<MD_DISK_REMOVED)
333 && ((disk.state & (1<<MD_DISK_JOURNAL)) == 0))
334 disks[disk.raid_disk*2] = disk;
335 else if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
336 && disks[disk.raid_disk*2+1].state == (1<<MD_DISK_REMOVED)
337 && !(disk.state & (1<<MD_DISK_JOURNAL)))
338 disks[disk.raid_disk*2+1] = disk;
339 else if (next < max_disks*2)
340 disks[next++] = disk;
341 }
342
343 avail = xcalloc(array.raid_disks, 1);
344
345 for (d= 0; d < array.raid_disks; d++) {
346
347 if ((disks[d*2].state & (1<<MD_DISK_SYNC)) ||
348 (disks[d*2+1].state & (1<<MD_DISK_SYNC))) {
349 avail_disks ++;
350 avail[d] = 1;
351 } else
352 rv |= !! c->test;
353 }
354
355 if (c->brief) {
356 mdu_bitmap_file_t bmf;
357 printf("%sARRAY %s", inactive ? "INACTIVE-":"", dev);
358 if (c->verbose > 0) {
359 if (array.raid_disks)
360 printf(" level=%s num-devices=%d",
361 str?str:"-unknown-",
362 array.raid_disks );
363 else if (!inactive)
364 printf(" level=container num-devices=%d",
365 array.nr_disks);
366 else
367 printf(" num-devices=%d", array.nr_disks);
368 }
369 if (container) {
370 printf(" container=%s", container);
371 printf(" member=%s", member);
372 } else {
373 if (sra && sra->array.major_version < 0)
374 printf(" metadata=%s", sra->text_version);
375 else
376 printf(" metadata=%d.%d",
377 array.major_version, array.minor_version);
378 }
379
380 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
381 if (vers >= 9001 &&
382 ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
383 bmf.pathname[0]) {
384 printf(" bitmap=%s", bmf.pathname);
385 }
386 } else {
387 mdu_bitmap_file_t bmf;
388 unsigned long long larray_size;
389 struct mdstat_ent *ms = mdstat_read(0, 0);
390 struct mdstat_ent *e;
391 char *devnm;
392
393 devnm = stat2devnm(&stb);
394 for (e=ms; e; e=e->next)
395 if (strcmp(e->devnm, devnm) == 0)
396 break;
397 if (!get_dev_size(fd, NULL, &larray_size))
398 larray_size = 0;
399
400 printf("%s:\n", dev);
401
402 if (container)
403 printf(" Container : %s, member %s\n", container,
404 member);
405 else {
406 if (sra && sra->array.major_version < 0)
407 printf(" Version : %s\n", sra->text_version);
408 else
409 printf(" Version : %d.%d\n",
410 array.major_version, array.minor_version);
411 }
412
413 atime = array.ctime;
414 if (atime)
415 printf(" Creation Time : %.24s\n", ctime(&atime));
416 if (array.raid_disks == 0 && external)
417 str = "container";
418 if (str)
419 printf(" Raid Level : %s\n", str);
420 if (larray_size)
421 printf(" Array Size : %llu%s\n", (larray_size>>10),
422 human_size(larray_size));
423 if (array.level >= 1) {
424 if (sra)
425 array.major_version = sra->array.major_version;
426 if (array.major_version != 0 &&
427 (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
428 unsigned long long dsize = get_component_size(fd);
429 if (dsize > 0)
430 printf(" Used Dev Size : %llu%s\n",
431 dsize/2,
432 human_size((long long)dsize<<9));
433 else
434 printf(" Used Dev Size : unknown\n");
435 } else
436 printf(" Used Dev Size : %lu%s\n",
437 (unsigned long)array.size,
438 human_size((unsigned long long)array.size<<10));
439 }
440 if (array.raid_disks)
441 printf(" Raid Devices : %d\n", array.raid_disks);
442 printf(" Total Devices : %d\n", array.nr_disks);
443 if (!container &&
444 ((sra == NULL && array.major_version == 0) ||
445 (sra && sra->array.major_version == 0)))
446 printf(" Preferred Minor : %d\n", array.md_minor);
447 if (sra == NULL || sra->array.major_version >= 0)
448 printf(" Persistence : Superblock is %spersistent\n",
449 array.not_persistent?"not ":"");
450 printf("\n");
451 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
452 if (vers >= 9001 &&
453 ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
454 bmf.pathname[0]) {
455 printf(" Intent Bitmap : %s\n", bmf.pathname);
456 printf("\n");
457 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
458 printf(" Intent Bitmap : Internal\n\n");
459 atime = array.utime;
460 if (atime)
461 printf(" Update Time : %.24s\n", ctime(&atime));
462 if (array.raid_disks) {
463 static char *sync_action[] = {
464 ", recovering", ", resyncing",
465 ", reshaping", ", checking" };
466 char *st;
467 if (avail_disks == array.raid_disks)
468 st = "";
469 else if (!enough(array.level, array.raid_disks,
470 array.layout, 1, avail))
471 st = ", FAILED";
472 else
473 st = ", degraded";
474
475 printf(" State : %s%s%s%s%s%s \n",
476 (array.state&(1<<MD_SB_CLEAN))?"clean":"active", st,
477 (!e || (e->percent < 0 && e->percent != RESYNC_PENDING &&
478 e->percent != RESYNC_DELAYED)) ? "" : sync_action[e->resync],
479 larray_size ? "": ", Not Started",
480 (e && e->percent == RESYNC_DELAYED) ? " (DELAYED)": "",
481 (e && e->percent == RESYNC_PENDING) ? " (PENDING)": "");
482 } else if (inactive) {
483 printf(" State : inactive\n");
484 }
485 if (array.raid_disks)
486 printf(" Active Devices : %d\n", array.active_disks);
487 if (array.working_disks > 0)
488 printf(" Working Devices : %d\n", array.working_disks);
489 if (array.raid_disks) {
490 printf(" Failed Devices : %d\n", array.failed_disks);
491 printf(" Spare Devices : %d\n", array.spare_disks);
492 }
493 printf("\n");
494 if (array.level == 5) {
495 str = map_num(r5layout, array.layout);
496 printf(" Layout : %s\n", str?str:"-unknown-");
497 }
498 if (array.level == 6) {
499 str = map_num(r6layout, array.layout);
500 printf(" Layout : %s\n", str?str:"-unknown-");
501 }
502 if (array.level == 10) {
503 printf(" Layout :");
504 print_r10_layout(array.layout);
505 printf("\n");
506 }
507 switch (array.level) {
508 case 0:
509 case 4:
510 case 5:
511 case 10:
512 case 6:
513 if (array.chunk_size)
514 printf(" Chunk Size : %dK\n\n",
515 array.chunk_size/1024);
516 break;
517 case -1:
518 printf(" Rounding : %dK\n\n",
519 array.chunk_size/1024);
520 break;
521 default: break;
522 }
523
524 if (array.raid_disks) {
525 struct mdinfo *mdi = sysfs_read(fd, NULL,
526 GET_CONSISTENCY_POLICY);
527 if (mdi) {
528 char *policy = map_num(consistency_policies,
529 mdi->consistency_policy);
530 sysfs_free(mdi);
531 if (policy)
532 printf("Consistency Policy : %s\n\n",
533 policy);
534 }
535 }
536
537 if (e && e->percent >= 0) {
538 static char *sync_action[] = {
539 "Rebuild", "Resync",
540 "Reshape", "Check"};
541 printf(" %7s Status : %d%% complete\n",
542 sync_action[e->resync], e->percent);
543 is_rebuilding = 1;
544 }
545 free_mdstat(ms);
546
547 if ((st && st->sb) && (info && info->reshape_active)) {
548 #if 0
549 This is pretty boring
550 printf(" Reshape pos'n : %llu%s\n",
551 (unsigned long long) info->reshape_progress<<9,
552 human_size((unsigned long long)info->reshape_progress<<9));
553 #endif
554 if (info->delta_disks != 0)
555 printf(" Delta Devices : %d, (%d->%d)\n",
556 info->delta_disks,
557 array.raid_disks - info->delta_disks,
558 array.raid_disks);
559 if (info->new_level != array.level) {
560 str = map_num(pers, info->new_level);
561 printf(" New Level : %s\n", str?str:"-unknown-");
562 }
563 if (info->new_level != array.level ||
564 info->new_layout != array.layout) {
565 if (info->new_level == 5) {
566 str = map_num(r5layout, info->new_layout);
567 printf(" New Layout : %s\n",
568 str?str:"-unknown-");
569 }
570 if (info->new_level == 6) {
571 str = map_num(r6layout, info->new_layout);
572 printf(" New Layout : %s\n",
573 str?str:"-unknown-");
574 }
575 if (info->new_level == 10) {
576 printf(" New Layout : near=%d, %s=%d\n",
577 info->new_layout&255,
578 (info->new_layout&0x10000)?"offset":"far",
579 (info->new_layout>>8)&255);
580 }
581 }
582 if (info->new_chunk != array.chunk_size)
583 printf(" New Chunksize : %dK\n",
584 info->new_chunk/1024);
585 printf("\n");
586 } else if (e && e->percent >= 0)
587 printf("\n");
588 if (st && st->sb)
589 st->ss->detail_super(st, c->homehost);
590
591 if (array.raid_disks == 0 && sra && sra->array.major_version == -1
592 && sra->array.minor_version == -2 && sra->text_version[0] != '/') {
593 /* This looks like a container. Find any active arrays
594 * That claim to be a member.
595 */
596 DIR *dir = opendir("/sys/block");
597 struct dirent *de;
598
599 printf(" Member Arrays :");
600
601 while (dir && (de = readdir(dir)) != NULL) {
602 char path[287];
603 char vbuf[1024];
604 int nlen = strlen(sra->sys_name);
605 dev_t devid;
606 if (de->d_name[0] == '.')
607 continue;
608 sprintf(path, "/sys/block/%s/md/metadata_version",
609 de->d_name);
610 if (load_sys(path, vbuf, sizeof(vbuf)) < 0)
611 continue;
612 if (strncmp(vbuf, "external:", 9) != 0 ||
613 !is_subarray(vbuf+9) ||
614 strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
615 vbuf[10+nlen] != '/')
616 continue;
617 devid = devnm2devid(de->d_name);
618 printf(" %s", map_dev_preferred(
619 major(devid),
620 minor(devid), 1, c->prefer));
621 }
622 if (dir)
623 closedir(dir);
624 printf("\n\n");
625 }
626
627 if (array.raid_disks)
628 printf(" Number Major Minor RaidDevice State\n");
629 else
630 printf(" Number Major Minor RaidDevice\n");
631 }
632 free(info);
633
634 for (d= 0; d < max_disks * 2; d++) {
635 char *dv;
636 mdu_disk_info_t disk = disks[d];
637
638 if (d >= array.raid_disks*2 &&
639 disk.major == 0 &&
640 disk.minor == 0)
641 continue;
642 if ((d & 1) &&
643 disk.major == 0 &&
644 disk.minor == 0)
645 continue;
646 if (!c->brief) {
647 if (d == array.raid_disks*2) printf("\n");
648 if (disk.number < 0 && disk.raid_disk < 0)
649 printf(" - %5d %5d - ",
650 disk.major, disk.minor);
651 else if (disk.raid_disk < 0 || disk.state & (1<<MD_DISK_JOURNAL))
652 printf(" %5d %5d %5d - ",
653 disk.number, disk.major, disk.minor);
654 else if (disk.number < 0)
655 printf(" - %5d %5d %5d ",
656 disk.major, disk.minor, disk.raid_disk);
657 else
658 printf(" %5d %5d %5d %5d ",
659 disk.number, disk.major, disk.minor, disk.raid_disk);
660 }
661 if (!c->brief && array.raid_disks) {
662
663 if (disk.state & (1<<MD_DISK_FAULTY)) {
664 printf(" faulty");
665 if (disk.raid_disk < array.raid_disks &&
666 disk.raid_disk >= 0)
667 failed++;
668 }
669 if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
670 if (disk.state & (1<<MD_DISK_SYNC)) {
671 printf(" sync");
672 if (array.level == 10 && (array.layout & ~0x1FFFF) == 0) {
673 int nc = array.layout & 0xff;
674 int fc = (array.layout >> 8) & 0xff;
675 int copies = nc*fc;
676 if (fc == 1 && array.raid_disks % copies == 0 && copies <= 26) {
677 /* We can divide the devices into 'sets' */
678 int set = disk.raid_disk % copies;
679 printf(" set-%c", set + 'A');
680 }
681 }
682 }
683 if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
684 if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
685 if (disk.state & (1<<MD_DISK_FAILFAST)) printf(" failfast");
686 if (disk.state & (1<<MD_DISK_JOURNAL)) printf(" journal");
687 if ((disk.state &
688 ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)
689 |(1<<MD_DISK_REMOVED)|(1<<MD_DISK_FAULTY)|(1<<MD_DISK_JOURNAL)))
690 == 0) {
691 printf(" spare");
692 if (is_26) {
693 if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
694 printf(" rebuilding");
695 } else if (is_rebuilding && failed) {
696 /* Taking a bit of a risk here, we remove the
697 * device from the array, and then put it back.
698 * If this fails, we are rebuilding
699 */
700 int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
701 if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
702 if (err && errno == EBUSY)
703 printf(" rebuilding");
704 }
705 }
706 }
707 if (disk.state == 0) spares++;
708 dv=map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
709 if (dv != NULL) {
710 if (c->brief)
711 n_devices = add_device(dv, &devices,
712 &max_devices,
713 n_devices);
714 else
715 printf(" %s", dv);
716 }
717 if (!c->brief) printf("\n");
718 }
719 if (spares && c->brief && array.raid_disks) printf(" spares=%d", spares);
720 if (c->brief && st && st->sb)
721 st->ss->brief_detail_super(st);
722 if (st)
723 st->ss->free_super(st);
724
725 if (c->brief && c->verbose > 0 && devices) {
726 qsort(devices, n_devices, sizeof(*devices), cmpstringp);
727 printf("\n devices=%s", devices[0]);
728 for (d = 1; d < n_devices; d++)
729 printf(",%s", devices[d]);
730 }
731 if (c->brief)
732 printf("\n");
733 if (c->test &&
734 !enough(array.level, array.raid_disks, array.layout,
735 1, avail))
736 rv = 2;
737
738 free(disks);
739 out:
740 close(fd);
741 free(subarray);
742 free(avail);
743 for (d = 0; d < n_devices; d++)
744 free(devices[d]);
745 free(devices);
746 sysfs_free(sra);
747 return rv;
748 }
749
750 int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
751 {
752 /* display platform capabilities for the given metadata format
753 * 'scan' in this context means iterate over all metadata types
754 */
755 int i;
756 int err = 1;
757
758 if (ss && export && ss->export_detail_platform)
759 err = ss->export_detail_platform(verbose, controller_path);
760 else if (ss && ss->detail_platform)
761 err = ss->detail_platform(verbose, 0, controller_path);
762 else if (ss) {
763 if (verbose > 0)
764 pr_err("%s metadata is platform independent\n",
765 ss->name ? : "[no name]");
766 } else if (!scan) {
767 if (verbose > 0)
768 pr_err("specify a metadata type or --scan\n");
769 }
770
771 if (!scan)
772 return err;
773
774 err = 0;
775 for (i = 0; superlist[i]; i++) {
776 struct superswitch *meta = superlist[i];
777
778 if (meta == ss)
779 continue;
780 if (verbose > 0)
781 pr_err("checking metadata %s\n",
782 meta->name ? : "[no name]");
783 if (!meta->detail_platform) {
784 if (verbose > 0)
785 pr_err("%s metadata is platform independent\n",
786 meta->name ? : "[no name]");
787 } else if (export && meta->export_detail_platform) {
788 err |= meta->export_detail_platform(verbose, controller_path);
789 } else
790 err |= meta->detail_platform(verbose, 0, controller_path);
791 }
792
793 return err;
794 }
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